WH-SVD-Cb: A Robust Blind Watermarking Scheme Using Wavelet Transform and Hessenberg SVD with Arnold Chaotic Map in the Cb Channel
Farid Ayeche, Adel Alti, Bilal Benmessahel · Traitement du signal · 2025
With the significant growth of malicious attacks, safeguarding personal data has become a critical and pressing concern.Images transmitted over unsecured networks are particularly vulnerable to tampering and unauthorized distribution.To address these challenges, networks must be fortified with robust strategies capable of preventing new attacks.These strategies should prioritize enhanced performance while maintaining content fidelity.The article presents a blind approach for color image watermarking that leverages the YCbCr color space's key properties.Both the image and the watermark were converted from RGB to YCbCr.Afterward, the watermark is encrypted using the Arnold Chaotic Map (ACM) to strengthen privacy and embedded into the Cb component using the WH-SVD-Cb watermarking schema.Image authenticity is validated through blind watermark extraction.The method's robustness and imperceptibility are analyzed through empirical evaluations.The findings indicate that embedding of watermark in the Cb component achieves notable robustness with NC values closing 1 and imperceptibility exceeding 52 dB, all within a processing time of 0.224 seconds.A demonstration code for the proposed watermarking scheme is available: https://www.mathworks.com/matlabcentral/fileexchange/177859-